baber/WOPTO huggingface dataset:
Patent GB-1002044-A (GB)
Title: Catalyst for the polymerisation of olefins
Inventor: DUCK EDWARD WILLIAM
IPC: C08F10/00
Filed: 1962-08-08
Abstract: Ethylenically unsaturated hydrocarbons, e.g. ethylene, propylene and butadiene are polymerized in the presence of a catalyst comprising the reaction product of (a) a compound of a transition metal from Group IVA, VA or VIA of the Periodic Table, (b) an aluminium halide, and (c) RxSiR14- x, where R=aryl, substituted aryl or alkyl, R1 represents alkyl, hydrogen, halogen or a group Si(R2)3, R2 being aryl and x = 1-4. Examples describe the preparation of solid polyethylene, ethylene/propylene copolymers and polybutadiene.  Polymerization may be effected at -50 DEG  C. to 150 DEG  C., at 0-2000 atmospheres, with or without a solvent. Specifications 946,013 and 962,952 are referred to.ALSO:Ethylenically unsaturated hydrocarbons are polymerized in the presence of a catalyst comprising the reaction product of (a) a compound of a transition metal from Group IVa, Va or VIa of the Mendel<\>aeeff Perodic Table: Ti, Zr, Hf, Th, V, Nb, Ta, Pa, Cr, Mo, W and U.  (b) an aluminium halide, and (c) RxSiR14-x where R=aryl, substituted aryl or alkyl, R1 represents alkyl, hydrogen, halogen or a group Si(R2)3, R2 being aryl and x=1-4. Specified transition metal compounds are TiCl3, TiCl4, CrO2Cl2, VCl4, VCl3 and vanadium and titanium di-isopropylsalicylate.  The polymerization catalysts may be prepared in the presence of pumice, Al2O3 or SiO2.  Specifications 946,013 and 962,952 are referred to.
Patent GB-778963-A (GB)
Title: Improvements in or relating to electric welding apparatus
Inventor: DONELAN JAMES ARTHUR
IPC: B23K9/167
Filed: 1954-10-22
Abstract: 778,963. Arc-welding electrode holders. GENERAL ELECTRIC CO., Ltd. Oct. 14, 1955 [Oct. 22, 1954], No. 30548/54. Class 39(3) An electric welding apparatus has at least two non-consuming electrodes. 1 e.g. of tungsten inclined at 10 to 20 degrees to one another and arranged to work in an atmosphere of inert gas e.g. argon. Each electrode is independently adjusted lengthwise in its own support 4, and each support 4 is independently adjustable in a line parallel to the axis of the main electrode holder body 2. The supports 4 are brass collet chucks formed from brass rods and have inclined bores to receive the electrodes 1 as a sliding fit. The electrode is held in adjusted position therein by a screw 6 carried by the support 4 and pressing on a tongue 5 brazed in a slot cut in the side of the support 4 so that the tongue 5 presses on the electrode. The holder body 2 is of plastic, is rectangular in crosssection and carries within it two brass  members 3 each formed from a cylindrical part and having a central bore in which the electrode support 4 slides and is locked in adjusted position by a screw 9 engaging a tapped hole in the member 3 and passing through a bore in the body 2. Straight cross tubes 8 mounted in stepped parts of the brass members 3 serve as electric supply leads and carry cooling water. The members 3 have flat faces leaving an open central passage in the body 2. A watercooled steel nozzle 12 is mounted below a plate 10 of pyrophilite on the arcing side of the body 2. The electrodes project slightly beyond the nozzle 12, and the arc may be seen through an eyepiece 15, by means of a prism mounted in tube 14 on the body 2. A two phase A.C. current is used with two electrodes. Specification 745,824 is referred to.
Patent GB-683853-A (GB)
Title: Improvements in or relating to lamp-shades
IPC: F21V1/00
Filed: 1950-12-15
Abstract: 683,853. Lamp shades. LEECH, H. C. Dec. 15, 1950 [Dec. 31, 19491, No. 30609/50. Class 75(ii) A lampshade comprises a deformable tubular canopy having upper and lower marginal beading, a support for holding the canopy radially and axially to a desired form, the support consisting of two spaced annular members 1, 2 of greater perimeters than their respective beadings, and spacer means to separate the two annuli into upward and downward engagement with their respective beading. Fig. 1 shows a table or pedestal lamp in which glass or plastic plates 1, 2 are held apart by means of a coiled spring 10 of strip form acting between annular members 5, 6, the lower of which is supported by rods such as 7, 8 connected to a third annulus 4. The members 1, 2 may be scalloped on the outer edges 13, 14. A hem is provided at the top and bottom of the cover and an elastic or other cord or tape 12 is threaded in the hem so as to secure the cover over the edge 13, 14 of the members, 1, 2. In Fig. 2 the members 1, 2 are resiliently separated by curved metal struts 18 removably fitted into sockets 19 formed on the two plates 1, 2. A finely reticulated gauze cap 20 having a central vent 21 excludes foreign matter and insects. The struts may include hinge means by which a toggle action may be applied to tension the cover: Alternatively the struts may be formed in lengths connected by left- and right-hand threaded union elements for adjustment purposes. In a further alternative the struts may operate telescopically with screws, bolts or clamping devices for fixing at the required length. A "day-light" effect may be obtained by using a blue coloured cover or canopy with a grey-blue opaque plastic or white reflector top member.
Patent GB-1095239-A (GB)
Title: Electric switch
IPC: H01H21/50
Filed: 1965-07-19
Abstract: 1,095,239. Cam-operated switches. SPERRY RAND CORPORATION. July 19, 1965 [July 30, 1964], No. 30617/65. Heading H2B. An electric switch having a movable contact 26 mounted on a resilient contact arm 25 and an actuator member having a cam portion 36 for alternately disconnecting and connecting the movable contact 26 with a stationary contact 16, 17 is characterized in that the actuator member is provided with a plurality of detent notches 40, 41, 42, and at least one of the contacts comprises a U-shaped spring member 20 having the contact on one arm and a latch hook 27 on the other arm, a base portion 22 of spring member 20 attached to a support member 12 of non-condutcive material, and the latch hook 27 is adapted to engage in selected detent notches 40, 41, 42 in accordance with the position of the actuator member to restrain ready movement thereof. The actuator member may be rotated by a finger piece (30). In an alternative embodiment, Figs. 7-11 (not shown), the two arms (54, 55) are parallel with their broad surfaces approximately in the same plane and are mounted above a wedge-shaped tiltable actuator (60) having a cam projection (64) to raise and lower the contact carrying arm and having a bulge portion with the detent notches.
Patent GB-1367439-A (GB)
Title: Production of alkylthiophosphonic acid dihalides
IPC: C07F9/42
Filed: 1973-06-27
Abstract: 1367439 Preparing alkyl thiophosphonic acid dihalides FRANCE ARMED FORCESMINISTER OF 27 June 1973 [3 Aug 1972] 30637/73 Heading C2P Alkyl thiophosphonic acid dichlorides and -dibromides are obtained by heating the corresponding dialkylthiophosphinic acid chloride or bromide respectively at 300 to 600 C., optionally in the presence of PSCl 3  or PSBr 3  respectively. The process can be carried out batchwise or continuously. Examples are given for the production of methyl thiophosphonic acid dichloride.
Patent GB-948527-A (GB)
Title: Improvements in or relating to stop motion devices
Inventor: DAVIES STANLEY
IPC: D02H13/00
Filed: 1961-08-25
Abstract: 948,527. Warping machines etc.; stop motion. BRITISH NYLON SPINNERS Ltd. Aug. 17, 1962 [Aug. 25, 1961], No. 30638/61. Headings D1C, D1D and D1M. In a stop motion for a warping machine &c. a pivoted beam 21 is usually held out of contact with an electrical contact 35 by the tension of a thread 36 passing through an eyelet 32. A pivoted beam 20 is usually held out of contact with the contact 35 by a length of chain 26 which is connected to a sprocket 28. If the thread tension falls the beam 21 is no longer supported and touches the contact 35 to complete a circuit and stop the machine. If the thread tension rises the beam 21 is pulled up and this by means of a rod 33 and a stop 34 pulls up the beam 20 to touch the contact 35 and stop the machine. The tension at which this latter takes place may be regulated by turning a knob 29 to turn the sprocket 28 and so lengthen or shorten the chain 26.
Patent GB-1347275-A (GB)
Title: Constructional means for the formation of a compound section  structural element
IPC: E06B3/267
Filed: 1971-06-30
Abstract: 1347275 Moulding frames JULIUS & AUGUST ERBSLOH 30 June 1971 [6 July 1970] 30665/71 Heading B5A [Also in Division E1] A means of making a heat insulated bar, e.g. a window frame, comprises two detachable panels 6 to hold elongate members 2, 3 at a required spacing for casting heat insulating material between them, the panels then being removable without cutting. The insulating material is solid or foamed synthetic resin, e.g. a polyurethane or polyester, introduced into the space in liquid form. The panels 6 are aluminium and integral with the members 2, 3, notches 7 allowing them to be torn away.
Patent GB-358730-A (GB)
Title: A machined flat jointed cast iron split ingot mould
IPC: B22D7/08
Filed: 1930-10-14
Abstract: 358,730. Moulds. KITCHING, W. T. and FOWLER (DON FOUNDRY), Ltd., J., Attercliffe Bridge, Sheffield. Oct. 14, 1930, No. 30689. [Class 83 (i).] Clamping and guiding moulds.-The halves A of an ingot-mould have meeting faces D machined or ground flat and are aligned by pins G in lugs B and clamped together by mild-steel or wroughtiron rings H and wedges J.
Patent GB-1275993-A (GB)
Title: Improvements in or relating to the continuous casting of non-ferrous metals
Inventor: KASHUBA VLADIMIR PAVLOVICH
IPC: B22D11/106
Filed: 1969-06-17
Abstract: 1275993 Continuous casting SPETSIALNOE KONSTRUKTORSKOE BJURO TYZHELYKH TSVETNYKH METALLOV 17 June 1969 [17 June 1968] 30716/69 Heading B3F Pressure variations in a chamber 1 of inert gas, caused by the reciprocation of a mould 6 at the bottom of the chamber, are compensated for by a vessel 8 of variable volume. Molten metal enters the mould 6 through a spout 4 from a tundish 3. A flange 10 with a seal 11, at the top of the mould, enters the bottom of the chamber 1 which has a gas supply line 9 and a viewing tube 5. There is also a seal 2 (incorporating sand) for co-operation with the tundish 3.
Patent GB-697671-A (GB)
Title: Improvements in or relating to the electric arc welding of bolts, studs and the like
IPC: B23K35/02
Filed: 1950-12-19
Abstract: 697,671. Welding by pressure. SARAZIN, J. N., SARAZIN, S. A., and MONEYRON, M. Dec. 19, 1950 [Feb. 2, 1950; Aug. 3, 1950], No. 30870/50. Class 83 (iv). In arc welding aluminium or aluminium alloy studs the root end of the stud is provided with a quantity of hexachlorethane. In embodiments, studs of an alloy of aluminium, magnesium and copper, are described. A stud 14, Fig. 5, of such metal has a recess 15 filled with dry powdered hexachlorethane 16 and closed by a cap 17 of the same metal held in position by the flanged ends of the recess. In a further embodiment a recess 20, Fig. 8, is provided, containing hexachlorethane and closed by a metal ring 22. A capsule 23, Fig. 9, may be employed. In another embodiment a recess 19, Fig. 6, may be obtained by cold-forging, filled with hexachlorethane and closed by bending the recess wall over. In other embodiments hexachlorethane is contained in an annular or a series of annularly-arranged recesses in the end face of the stud and closed by a cap cemented thereto. In welding an earthenware ferrule may be employed. Specification 565,633 is referred to.
Patent GB-361528-A (GB)
Title: Improvements in oil insulated cables
IPC: H02G15/20
Filed: 1930-10-15
Abstract: 361,528. Cables. TELEFONAKTIEBOLAGET L. M. ERICSSON, 33, Kungsgatan, Stockholm. Oct. 15, 1930, No. 30871. Convention date, Oct. 16, 1929. [Classes 36 and 38 (i).] In order to maintain the temperature of heavy current oil cables, particularly high tension cables, constant independently of current load variation, electrical energy is supplied to the cable to furnish extra heat. In the construction shown in Fig. 1 the main conductor 1 is tubular, a resistance wire 3 having insulation 2 being placed within the conductor 1 and being adapted to heat the cable. The conductor 1 is filled with oil. In modified constructions, the resistance wire may be placed between insulation and the lead sheath and may be in tape form wound helically round the insulation. An elastic expansion vessel for controlling oil movement through pressure variation may be combined in the construction. The resistance wire may be placed outside the lead sheath. In order to regulate the cable temperature, the conductors of a 3-phase system are connected to the secondary side of a transformer in which the secondary is provided with a few additional turns. An adjustable current of low tension is tapped off the additional turns to the resistance wire. The temperature of the cable is controlled or indicated by means of galvanometers and resistances connected into Wheatstone bridges, or there may be wound round the cables wires made of material of which the resistance varies with the temperature. In another disposition the heating current is tapped off from separate alternating current sources through transformers, rheostats in the primaries controlling the current. Thermocouples may be used to indicate the temperature of the cables. In the construction shown in Fig. 9, conductors are connected through switches 20 in parallel with one phase of an alternating current source 21 so that the number of conductors in use may vary with the prevailing load. The conductors are of the type in which a main conductor is divided into a number of parts insulated from each other, the parts being either tubularly disposed round a central core, or cylindrically disposed so as to form a central hollow in the cable for oil insulation. Automatic control means for regulating the temperature are shown in Fig. 9, the switches 20 being shifted by a motor 22 which is formed with a frame pivoted on a shaft 23 and provided with driving pulleys 24, 25. The pulleys 24, 25 engage a friction disc 26 as the motor frame pivots and drive through gearing the switches 20. The motor frame is tilted to one of the driving positions by electromagnets 31, 32 in the circuit of a thermostat 33 in the cable which closes the circuit for the electromagnets respectively at the lower and upper temperature limits of the cable. The temperature of the cable may be indicated by lamps 35, 36 under the control of a thermostat 34.
Patent GB-171702-A (GB)
Title: Improvements in change-speed gears
IPC: F16H61/02
Filed: 1921-11-18
Abstract: 171,702. Ranwez, C. Nov. 18, 1920, [Convention date]. Variable-speed gearing.-An epicyclic reducing- train is connected through an accelerating-train with a slipping friction clutch controlled by yielding means so as to constitute gearing adjusted automatically with the load. Stepped planet gears 9, 10 in a revoluble casing 6 mesh respectively with a pinion 3 secured to a driving-shaft 1 and a wheel 5 secured to a driven shaft 4. A train for controlling comprises planet gears 11, 14 meshing respectively with a wheel 2 fast on the shaft 1 and a pinion 12 fast on a sleeve 13 loose on the shaft 4. For the lowest speed of the shaft 4, the casing is kept from slipping backwards by a pawl 30 engaging a fixed ratchet 31. Higher speeds are produced by causing the casing 6 to turn by pressing a friction clutch surface 15 on the sleeve 13 more and more strongly against a like surface 16 on the casing. A spring 17 behind the clutch 15 is compressed by an abutment 18 which is movable so as to effect the automatic control. For this purpose, a gear 19, which transmits power to a load shaft 23, is adapted to screw on the shaft 4 against the action of a strong spring 21 so as to move longitudinally as the load varies. The control is assisted by masses 33<1>, or by a fly-wheel.
Patent GB-306434-A (GB)
Title: Improvements in and relating to pyranthrone dyestuffs
IPC: C09B3/46
Filed: 1927-11-17
Abstract: 306,434. British Alizarine Co., Ltd., and Beghin, P. Nov. 17, 1927. Samples furnished. Pyrantrone dyes.-Pyranthrone or its substi. tution products, such as dichlor- or dibrompyranthrone, are treated in solution or suspension in an organic solvent, such as nitrobenzene or nitrotoluene, with sulphuryl chloride at 140- 205‹ C. The products dye cotton from a vat green shades, which give browns on after-treatment with oxidizing-agents, such as sodium hypochlorite, hypochlorous acid, or sodium bichromate.
Patent GB-600882-A (GB)
Title: Improvements in or relating to fasteners
IPC: E05C5/04
Filed: 1945-11-17
Abstract: 600,882. Screw fastenings. WEINBERG, H. Nov. 17, 1945, No. 30939. [Class]44] The bolt 1 of a screw-bolt fastener for securing sliding sash windows is fitted or formed with a disc or bush 5 having slots or openings 8 capable of being engaged by pins or projections 7 on the bit of a key 6 and the disc 5 is enclosed in a metal tubular casing 2 having a slot 9 in the cap 10 whereby the key may be inserted to operate the bolt.
Patent GB-1102668-A (GB)
Title: Improvements in or relating to foundation members for buildings
Inventor: HALLAM VICTOR
IPC: E02D27/02
Filed: 1965-07-21
Abstract: 1,102,668. Foundation blocks. VIC HALLAM Ltd. 20, Oct., 1966 [21, July, 1965], No. 30947/65. Heading E1B. The lower cill 6 of a timber or other wall is secured to a prefabricated foundation block 1 of L cross-section by T-headed bolts 4 engaging an undercut metal channel 3 cast into the block. The block 1 is supported on a brick or other foundation 8 and acts as permanent shuttering for a poured concrete slab 7.
Patent GB-734864-A (GB)
Title: Improvements in or relating to mechanically operated floor treatment machines
Inventor: SHORT KONRAD
IPC: A47L11/40
Filed: 1952-12-05
Abstract: 734,864. Floor cleaning machines. TRUVOX, Ltd. Nov. 20,1953 [Dec. 5, 1952], No. 30966/52. Class 138 (1). A floor-treating machine of the kind employing brushes, pads or the like rotated e.g. by an electric motor (not shown) while in contact with the floor, is provided with a wheeled undercarriage 15 for supporting the machine during transportation thereof with the brushes 11 or the like in an out-of-use position, which undercarriage is adapted to be raised or lowered by means controlled by a steering handle 19 of the machine, and locking means for locking the undercarriage when lowered so as to free the steering handle for pivotal movement for steering the machine during transport. The undercarriage 15, Fig. 3, has four wheels 18 and is vertically slidable in the machine main body structure 10 by means of two rods 16 rigidly connected to the undercarriage 15 and mounted in guides 17 of the structure 10. Compression springs 39 urge the undercarriage in the upward direction. The steering handle 19 is pivoted on the structure 10 at 22 and has an abutment 24, adapted, when the handle is raised to the vertical position, Fig. 2, to engage a bar 25 connecting together two rocker arms 26 pivoted respectively to the structure 10 at 27. Noses 28 on the arms 26 contact the tops of the rods 16 to depress the undercarriage 15 as shown in Fig. 2. When the undercarriage 15 is lowered it is locked in position as by blocks 30 engaging between the bar 25 and a main body part 29 carrying the pivot 22. The blocks are carried on the ends of a bifurcated leaf spring 36 attached to a plunger 33 controlled by a manually-operable cam lever 32, the plunger being slidable in the body structure by the action of a compression spring 35, whilst the lever 32 is pivoted to the body structure. Referring to Fig. 3, when the machine is in operation the lever 32 is normally in a raised position and the handle 19 inclined and freely pivotal, the blocks 30 being disposed underneath the bar 25 and the undercarriage raised by the springs 39. In order to lower the undercarriage the lever 32 is turned downwardly to raise the plunger 33 and flex the leaf spring 36. The handle 19 is then momentarily moved to the position shown in Fig. 2, whereby the rockers depress the undercarriage. As the rockers are depressed the spacing gap between the bar 25 and the part 29 increases until the blocks 30 snap into position therebetween and lock the undercarriage in its lowered position. The handle 19 can thereafter be freely pivoted about the pivot 22 in order to move the machine on the wheels 18:
Patent GB-428080-A (GB)
Title: Improvements in or relating to the production of condensation products of acetylene
IPC: C07C41/08
Filed: 1933-11-07
Abstract: The reaction of acetylene with organic compounds containing one or more hydroxyl groups is effected in the absence of mineral acid and with the addition of acid-free freshly precipitated mercuric sulphate as catalyst.  The catalyst may be prepared by adding concentrated sulphuric acid to a solution of mercuric acetate, and washing the precipitate with methyl alcohol.  The hydroxylated p  organic compounds which may be treated comprise lower aliphatic alcohols, glycols, polyhydric alcohols, and phenols.  Examples are given in which acetylene is reacted, under the conditions described above, with (1) methyl alcohol, to yield dimethyl acetal; (2) glycerol, to yield a glycerol acetal; (3) benzyl alcohol, to yield a product of unstated constitution; (4) phenol, to yield a resinous product. Specification 15919/14, [Class 2 (iii)], is referred to.ALSO:Mercuric sulphate (for use as a catalyst in the reaction of acetylene with hydroxylated organic compounds) is prepared by adding concentrated sulphuric acid to a solution of mercuric acetate, and washing the precipitate with methyl alcohol.
Patent GB-865647-A (GB)
Title: Improvements in or relating to valve means for controlling flow of fluid
Inventor: MCCORMACK ROBERT SAMUEL
IPC: F16K11/083
Filed: 1958-09-29
Abstract: 865,647. Valves. BAKER PERKINS Ltd. Sept. 29, 1959 [Sept. 29, 1958], No. 31004/58. Class 135. [Also in Group XI] A rotary cock comprises a body 1 having a liquid inlet 7, Fig. 2, and outlet 8, Fig. 1, an air inlet 9 and outlet 10, and a connecting duct 12 from the air inlet to a blind port 11 to which the liquid outlet is connectible by rotation of the ported plug 3, the plug having an " on " position in which the inlets are connected to their respective outlets, an " intermediate " position, Fig. 2, in which the air inlet is connected to both outlets via the connecting duct and blind port, and an "off" position, Fig. 1, in which the inlets are closed. After the " on " position the air outlet is connected to the air inlet just prior to the connection with the liquid outlet in the " intermediate " position. The cock controls oil and air to a burner, the air also being used to purge the oil line.
Patent GB-340643-A (GB)
Title: Improvements in or relating to tramway, trolley bus or like trolley heads
IPC: B60L5/06
Filed: 1929-10-12
Abstract: 340,643. Lubricating. METROPOLITAN ELECTRIC TRAMWAYS, Ltd., 55, Broadway, Westminster, and SCHOFIELD, J., Ismailia, The Orchard, Winchmore Hill, London. Oct. 12, 1929, No. 31022. [Class 12 (ii).] Channels and reservoirs in trolley wheels.-A trolley wheel 11 has a spherical hub 14 engaged by trunnions 15 mounted in the head 12, the hub being hollow to contain lubricant for the trunnions introduced through a hole 29 closed by a screw plug 30.
Patent GB-875395-A (GB)
Title: Regulating mechanism
IPC: F15B13/04
Filed: 1958-09-29
Abstract: 875,395. Fluid-pressure servomotor-control systems. SULZER FRERES S.A. Sept. 29, 1958 [Oct. 12, 1957], No. 31075/58. Class 135. A fluid-pressure servo-system comprises a valve 2 which controls the supply of fluid to one or other side of a double-acting piston 1 connected by rod 14 and link 16 to the housing 5 of the valve 2 to provide follow-up. A sleeve 17 is located in the housing 5 between the valve lands 3, 4 and is shorter in length than the distance between the lands. The sleeve 17 bears resiliently against the wall of the bore 6. If a movement is given to the valve 2 to open say the port 10, the sleeve 17 will be picked up and will throttle the port 10 so that the movement of the piston 1 is retarded. This throttling action reduces the amount of hunting which takes place before the valve re-centres.